JPH11350684A - Roof with solar cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof with solar cells whose surface can be safely and easily cleaned. SOLUTION: A cleaning member 43 for cleaning the surfaces of solar cell panels 10 is movably provided on a roof 4 with solar cells where a plurality of solar cell panels 10 formed into a prescribed dimension are arranged lengthwise and crosswise on the roof surface and the cleaning member 43 is manually or automatically driven from the indoor side. This constitution can dispense with climbing-up on the roof for cleaning, provide the safe and easy cleaning on the roof surface, quickly remove the dirt on the surface of the solar cell panels 10, and sufficiently secure the outputted power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof with a solar cell provided with a solar cell panel for generating electricity by sunlight.

[0002]

2. Description of the Related Art Conventionally, solar energy has been known as energy that does not adversely affect the environment and ecosystem, and a solar energy conversion device such as a solar cell that converts this solar energy to use as electricity or hot water. There is. Such devices are typically installed on the roof of a building. Here, when installing a solar cell on a roof, it is necessary to prevent accidents such as electric leakage or short circuit due to water. For this reason, as disclosed in Japanese Patent Application Laid-Open No. 10-12911, a solar cell panel in which a solar cell as a solar cell is housed in a flat, completely waterproof case whose surface is covered with a light-transmitting surface material such as glass. Is used. This solar cell panel has a predetermined number of solar cells built therein so that a predetermined voltage and power can be obtained by one sheet.

[0003]

In such a roof with solar cells, when dirt such as dead leaves and dust adhere to the surface of the solar cell panel, the amount of power generated by the solar cell panel decreases. For this reason, in order to secure a sufficient amount of power, it is necessary to climb the roof and clean the roof surface before the surface of the solar cell panel becomes very dirty. However, there is a problem that the work of cleaning the roof surface is dangerous and complicated because it is at a high place. SUMMARY OF THE INVENTION An object of the present invention is to provide a roof with a solar cell, which makes it possible to clean a roof surface safely and easily.

[0004]

According to the present invention, referring to the drawings, a solar cell-mounted roof 4 in which a plurality of solar cell panels 10 each having a predetermined size are arranged vertically and horizontally on a roof surface. A cleaning member 43 for cleaning the surface of the solar cell panel 10 is movably provided on the roof surface.
In the present invention, if the cleaning member 43 is driven manually or automatically from the indoor side, it is not necessary to climb on the roof to perform cleaning, and the roof surface can be cleaned safely and easily.

[0005] In the above, it is preferable that a detecting means for detecting the output voltage of the solar cell panel and a driving means for driving the cleaning member by a signal generated from the detecting means be provided. When the same amount of solar radiation is received, the output voltages of the solar cell panels 10 having the same area are the same.
By monitoring the output voltage of 0, the output voltage of one solar cell panel is lower than the output voltage of another solar cell panel, so that it can be determined that the surface is dirty. Thereby, the dirt on the surface of the solar cell panel can be automatically detected, and the cleaning member 43 can be automatically driven. Therefore, the dirt on the surface of the solar cell panel 10 is automatically removed, and A large amount of power is always secured.

Further, it is preferable that the cleaning member 43 is provided on the slider 40 which can reciprocate between two positions of the ridge and the eaves. By doing so, the entire surface of the solar cell panels 10 arranged vertically and horizontally on the roof surface can be cleaned thoroughly, and the amount of power generated by each solar cell panel can be sufficiently ensured.

Further, the cleaning member 43 may be provided on an arm 52 whose tip is rotatable between two positions of a ridge and an eave. With this configuration, a simple structure such as simply supporting the arm 52 on the roof can be adopted, and the support shaft of the arm 52 can be manually operated from the indoor side. Safe and easy cleaning operation is realized with a simple structure.

The roof surface is provided with a mounting member extending along the edge of the solar cell panel and supporting the edge of the solar cell panel. The mounting member includes the slider. It is preferable that a guide portion for guiding the mounting member along the extending direction is provided. In this case, by providing the mounting, a guide portion for guiding the slider to the roof is provided,
Apart from mounting, there is no need to provide a guide member for guiding the slider, the structure of the solar cell-mounted roof is not complicated at all, and the solar cell-mounted roof can be easily assembled.

Further, it is preferable that cleaning liquid spraying means 50 for spraying a cleaning liquid be provided on the roof surface. With this configuration, the cleaning liquid is sprayed on the roof surface, so that even if dry dirt is attached to the roof surface, the dirt is reliably removed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a roof 4 with solar cells according to a first embodiment of the present invention.
Is provided in the unit building 1 as shown in FIG. The unit building 1 is a combination of a plurality of first-floor building units 2 and second-floor building units 3 formed in a box shape. On the other hand, the roof 4 has a plurality of roof panels 5
Are arranged on a base surface formed by arranging them in the girder direction, and a number of solar cell panels 10 are arranged vertically and horizontally via a rail-shaped mounting member 20. The roof 4 is provided with a plurality of sliders 40 which can reciprocate between two positions of a ridge and an eaves. Each slider 40 is an elongated rectangular parallelepiped member that slides between the mounting members 20. Each of the sliders 40 is provided with a brush 43 as a cleaning member for cleaning the surface of the solar cell panel. Thereby, the brush 43 is movably provided on the roof 4. The first-floor building unit 2, the second-floor building unit 3, and the roof panel 5 are manufactured in a factory in advance and combined with each other at a building site.

As shown in FIG. 2, the solar cell panel 10 includes a flat waterproof case 12 containing a predetermined number of solar cells,
The case 12 has a rectangular frame 13 attached to the periphery of the case 12. The case 12 and the frame 13 are waterproof and reinforced, and the internal solar cell is protected from accidents such as electric leakage and short circuit due to rainwater, a load applied to the surface of the solar cell panel 10, and the like. In FIG. 2, the vertical frame portion 13A of the frame body 13 extending in the direction perpendicular to the paper surface has a lower portion projecting below the lower surface of the horizontal frame portion 13B extending in the left-right direction in the figure.
Of the leg 14. The load on the solar cell panel 10 is transmitted to the mounting member 20 by the legs 14. Further, the leg portion 14 is provided with a fixing flange portion 15 protruding outward at an outer lower end portion.

The mounting member 20 extends along the inclined edge of the solar cell panel 10 and supports the edge of the solar cell panel 10. Mounting member 2
0 is a trough 21 having a U-shaped cross section with an opening at the top in the figure.
And a pipe section 22 having a square cross section integrally provided below the gutter section 21. The gutter 21
While receiving the legs 14 of the solar cell panel 10, it collects rainwater or the like that has fallen on the solar cell panel 10 and drains it to the eaves. The leg 14 is mounted on the bottom 23 of the gutter 21 and the fixing flange 15 of the leg 14 is fixed.
And a tapping screw 24 passing therethrough is screwed. And this bottom part 23 is a fixing part for fixing the solar cell panel 10. A fixing member 16 having a crank-shaped cross section is arranged at a joint between adjacent solar cell panels 10. The fixing tool 16 has a lower end fixed to the bottom 23 of the gutter section 21 and presses the flange 11 of the solar cell panel 10 fixed to the mounting member 20 at the upper end from above.

The pipe section 22 is provided on the solar cell panel 1.
The bottom surface of the gutter 21 is screwed into the bottom 23 of the gutter 21 and screwed into the eaves to drain rainwater or the like into the eaves. A mounting flange 25 is protruded from the inclined side surface of the pipe portion 22 near the lower end, and a screw 26 passing through the mounting flange 25 is screwed into the roof panel 5 to thereby attach the mounting member 20. Has been fixed. A tongue 3 is provided between the opposing side surfaces of the adjacent mounting members 20.
Makeup joint gasket 3 with 1A and 32A protruding horizontally
1 and 32 are inserted so that the adjacent mounting members 2
A waterproof structure for waterproofing the joints 7 between zeros is formed.

Here, the mounting member 20 is provided with a rail portion 42 projecting upward from the center of the bottom portion 23 of the gutter portion 21 above the upper surface of the solar cell panel 10 and extending in the longitudinal direction of the mounting member 20. Have been. Near the upper end of the rail portion 42, a slit 46 extending in the longitudinal direction of the mounting member 20 is provided. On the other hand, a plurality of sliders 40 provided on the roof 4 are mutually connected by a connecting shaft 40A. The connecting shaft 40A is attached to the mounting member 20.
Are inserted through the slits 46 of the main body. On the connecting shaft 40A,
A flange 43A sandwiching the rail 42 is provided.
Here, the rail part 42 is a guide part for guiding the slider 40 along the extending direction of the mounting member 20.

A connecting shaft 40 for connecting the sliders 40 to each other
A penetrates each slider 40 as shown in FIGS. 1 and 3, and its end 40B protrudes toward the end edge of the roof surface. Inside the ridge of the roof 4, a drive shaft 51A that is driven to rotate by a motor 58 described later is provided. Roof 4
A pulley 51B supported by a drive shaft 51A is disposed at the ridge side portion of the end edge of the wrist, and another pulley 51C is rotatably provided at the eaves side portion. These pulleys 5
A timing belt 49 formed in a ring shape is stretched over 1B and 51C. The end portion 40B of the connecting shaft 40A penetrating the slider 40 is fixed to the timing belt 49. The driving force of the motor 58 reciprocates the slider 40 via the driving shaft 51A, the pulleys 51B and 51C, and the timing belt 49. Here, the motor 58, the drive shaft 51A, the pulley 51B,
51C, the timing belt 49 and the like form driving means for driving the brush 43 as a cleaning member. Also,
In the vicinity of the roof 4 ridge, a water spray pipe 50 is provided as a cleaning liquid spraying means for spraying water as a cleaning liquid on the roof surface. The watering pipe 50 is provided with a plurality of watering ports 50 </ b> A according to the position of the solar cell panel 10.

FIG. 4 shows a control circuit 61 for controlling the motor 58. The control circuit 61 includes a multiplexer 62 for switching connection with the solar cell panel 10.
A voltage detector 55 as detection means for detecting the output voltage of the solar cell panel 10; a controller 56 for determining whether to drive the motor 58 based on the voltage value detected by the voltage detector 55; And an electromagnetic switch 57 for turning on and off the connection between the motor 58. Note that, as the motor 58, a capacitor motor or the like that can rotate in the opposite direction by switching a single-phase alternating current from a normal phase to a reverse phase is employed. Multiplexer 62
The connection is selectively switched so that the voltages at both ends of each of the plurality of solar cell panels 10 are individually applied to the voltage detector 55. The voltage detector 55 detects the voltage of the solar cell panel 10 applied via the multiplexer 62.

The controller 56 is a computer including a microprocessor or the like.
Is monitored to detect that the output voltage of one solar panel has dropped below the output voltage of the other solar panel, thereby determining that the surface is dirty. ing. A keyboard 59 and a display 60 are connected to the controller 56 for inputting necessary initial data and the like. The electromagnetic switch 57 not only turns on and off the connection between the power supply and the motor 58, but also has a function of switching the single-phase AC voltage to the motor 58 from one of the positive phase and the negative phase to the other. I have. With such a control circuit 61,
When dirt adheres to one of the plurality of solar cell panels 10 and the voltage of the solar cell panel 10 decreases, the controller 56 determines that the dirt has adhered and the motor 58 is automatically driven, and the slider 40 Move, and the dirt on the solar cell panel 10 is removed. When a predetermined time has elapsed since the driving of the motor 58, the motor 58 is automatically driven to reverse, and the slider 40
Returns to the original position.

According to the above-described embodiment, the following effects can be obtained. That is, a brush 43 for cleaning the surface of the solar cell panel 10 is movably provided on the solar cell-equipped roof 4 in which a plurality of solar cell panels are arranged vertically and horizontally on the roof surface, and the brush 43 is driven by a motor 58. As a result, the brush 43 is automatically driven, so that it is not necessary to climb the roof 4 to perform cleaning, and the roof surface can be cleaned safely and easily.

Further, a voltage detector 55 for detecting the output voltage of the solar cell panel 10 is provided, and based on the output voltage detected by the voltage detector 55, dirt on the surface of the solar cell panel 10 is automatically detected. Therefore, the brush 43 is automatically driven at an appropriate timing, so that dirt on the surface of the solar cell panel 10 can be automatically removed, and a sufficient amount of electric power can always be secured.

Further, a slider 40 which can reciprocate between two positions of the ridge and the eaves is provided in accordance with the solar cell panel 10, and a brush 43 is provided on each of the sliders 40.
Is provided so that the entire surface of the solar cell panel 10 is thoroughly cleaned, so that the amount of power generated by each solar cell panel 10 can be sufficiently ensured.

A mounting member 20 for supporting the solar cell panel 10 is provided.
Is provided along the extending direction of the mounting member 20, the rail member 42 for guiding the slider 40 to the roof 4 is automatically installed by providing the mounting member 20 on the roof 4. The mounting member 20
Apart from this, it is not necessary to provide a guide member for guiding the slider 40, and even if the above-described cleaning mechanism is provided on the roof 4, the structure of the roof with solar cells 4 is not complicated at all, and the roof 4 with solar cells 4 Can be easily performed.

Further, since the watering pipe 50 for spraying the cleaning water on the roof surface is provided, the cleaning water is sprayed on the roof surface even if the roof surface has dry dirt. Therefore, the dirt can be reliably removed.

FIG. 5 shows a second embodiment of the present invention. In the present embodiment, the slider 40 that linearly reciprocates in the first embodiment is an arm 52 whose tip is rotatable between two positions of a ridge and an eave. That is, a pair of arms 52 are provided at the opposite corners of the roof 4A.
Are respectively supported at the base ends. A blade (not shown) made of an elastic member such as rubber that is in close contact with the surface of the solar cell panel 10 is attached to the arm 52. The support shaft of the arm 52 can be manually operated from the indoor side. As a result, the arm 52 rotates similarly to the wiper of the automobile, and cleans the surface of the solar cell panel 10. According to this embodiment, the same operation and effect as those of the first embodiment can be obtained. In addition, a simple structure in which the arm 52 is simply pivotally supported on the roof 4 is completed. Further, an effect that an easy cleaning operation can be realized with the simplest structure can be added.

The present invention is not limited to the above-described embodiment, but includes the following modifications as long as the object of the present invention can be achieved. For example,
The roof is not limited to the gable type, but may be other types of roofs, such as a ridge type.Also, it is not limited to the roof of a unit type building, but consists of a conventional method of joining columns and beams at the building site It may be the roof of a building. Further, the slider to which the cleaning member is fixed is not limited to one in which a plurality of members are connected to each other and moves the roof surface integrally, but ones which can be individually moved, or several as one group. It may be integrated and each group may be moved separately,
The drive structure and drive form of the slider can be set as appropriate in the implementation. The present invention can be applied to a roof other than a building, for example, a roof of a train or an automobile, or a roof of a ship.

[0025]

As described above, according to the present invention, the roof surface can be cleaned safely and easily, and the amount of power generated by the solar cell panel can be sufficiently secured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a unit-type building according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of a roof in the embodiment.

FIG. 3 is a partially broken perspective view showing a main part of the driving means of the embodiment.

FIG. 4 is a block diagram showing a control circuit employed in the embodiment.

FIG. 5 is a front view showing a roof according to a second embodiment of the present invention.

[Explanation of symbols]

 4, 4A Roof with solar cell 10 Solar cell panel 20 Mounting member 40 Slider 42 Rail part as guide part 43 Brush as cleaning member 50 Sprinkling pipe as cleaning liquid spraying means 52 Arm

Claims (6)

[Claims] A cleaning member for cleaning a surface of the solar cell panel on the roof surface, wherein a plurality of solar cell panels formed in a predetermined size are arranged on a roof surface vertically and horizontally. A roof with solar cells, characterized in that the roof is movable. 2. A roof with solar cells according to claim 1, wherein said detecting means detects an output voltage of said solar cell panel, and said driving means drives said cleaning member by a signal generated from said detecting means. A roof with solar cells, which is provided. 3. The roof with a solar cell according to claim 1, wherein the cleaning member is provided on a slider that can reciprocate between two positions of a ridge and an eaves. 4. The roof with a solar cell according to claim 1, wherein the cleaning member is provided on an arm whose tip is rotatable between two positions of a ridge and an eaves. roof. 5. The roof with solar cells according to claim 3, wherein the roof surface has an attachment member extending along an edge of the solar cell panel and supporting the edge of the solar cell panel. A roof provided with a solar cell, wherein the mounting member is provided with a guide portion for guiding the slider along the extending direction of the mounting member. 6. A solar cell with a solar cell according to claim 1, further comprising a cleaning liquid spraying means for spraying a cleaning liquid on said roof surface. With roof.